- getscaling() incorrectly used an int intermediate variable
This would force scaling to an integer value when read.
- Only parse ConfigureNotify events describing a change to the SyncTERM window
It appears that XWayland on ChromeOS was occasionally sending a
ConfigureNotify event describing some other window to SyncTERM,
and that window had a 1x1 size, which would cause SyncTERM to
assert minimum size again (usually 640x480), which would set
scaling to 1.0.
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